US Bridges

SR 7 over I 55

Fair

Grenada County, Mississippi · SR 7/SR 8 over I 55 · Structure no. 31000070220670A

Built
1965
60 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
252 ft
2 main spans
Daily traffic
3,750
2023 count
Owner
State
State Highway Agency

About this bridge

SR 7 over I 55 is a prestressed concrete stringer/multi-beam or girder carrying SR 7 over I 55 in Grenada County, Mississippi. It was built in 1965, so it is 60 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,750 vehicles a day, roughly 8% of them trucks, projected to reach 3,850 by 2043. The structure is 252 ft (76.8 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 7
CrossesI 55
LocationSR 7/SR 8 over I 55
RouteState Highway 7
CountyGrenada County
StateMississippi
Coordinates33.78604, -89.84017
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.8 US tons
Inventory rating54.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span70 ft (21.3 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,750 (2023)
Projected traffic3,850 by 2043
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$312 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 7 over I 55 built?

It was built in 1965, making it 60 years old in 2025.

What condition is SR 7 over I 55 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does SR 7 over I 55 carry?

About 3,750 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 7 over I 55?

The structure is 252 ft (76.8 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns SR 7 over I 55?

It is owned by the State Highway Agency.